Add support for Origin HTTP header.

This is required for any CORS handling.

Makefile

@@ -248,6 +248,7 @@ REGRESS		 = regress/test-abort-validator \
 		   regress/test-logging-errors \
 		   regress/test-nogzip \
 		   regress/test-nullqueryval \
+		   regress/test-origin \
 		   regress/test-path-check \
 		   regress/test-ping \
 		   regress/test-ping-double \

child.c

@@ -1,6 +1,5 @@
-/*	$Id$ */
 /*
- * Copyright (c) 2012, 2014--2020 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) Kristaps Dzonsons <kristaps@bsd.lv>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -179,6 +178,7 @@ static	const char *const krequs[KREQU__MAX] = {
 	"HTTP_IF_RANGE", /* KREQU_IF_RANGE */
 	"HTTP_IF_UNMODIFIED_SINCE", /* KREQU_IF_UNMODIFIED_SINCE */
 	"HTTP_MAX_FORWARDS", /* KREQU_MAX_FORWARDS */
+	"HTTP_ORIGIN", /* KREQU_ORIGIN */
 	"HTTP_PROXY_AUTHORIZATION", /* KREQU_PROXY_AUTHORIZATION */
 	"HTTP_RANGE", /* KREQU_RANGE */
 	"HTTP_REFERER", /* KREQU_REFERER */

kcgi.h

@@ -1,6 +1,5 @@
-/*	$Id$ */
 /*
- * Copyright (c) 2012, 2014--2018 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) Kristaps Dzonsons <kristaps@bsd.lv>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -150,6 +149,7 @@ enum	krequ {
 	KREQU_IF_RANGE,
 	KREQU_IF_UNMODIFIED_SINCE,
 	KREQU_MAX_FORWARDS,
+	KREQU_ORIGIN,
 	KREQU_PROXY_AUTHORIZATION,
 	KREQU_RANGE,
 	KREQU_REFERER,

regress/test-origin.c

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) Kristaps Dzonsons <kristaps@bsd.lv>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include "../config.h"
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <curl/curl.h>
+
+#include "../kcgi.h"
+#include "regress.h"
+
+static int
+parent(CURL *curl)
+{
+	struct curl_slist	*list = NULL;
+	CURLcode		 c;
+
+	curl_easy_setopt(curl, CURLOPT_URL, "http://localhost:17123/");
+	list = curl_slist_append(list, "Origin: http://localhost");
+	curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list);
+	c = curl_easy_perform(curl);
+	curl_slist_free_all(list); 
+	return c == CURLE_OK;
+}
+
+static int
+child(void)
+{
+	struct kreq	 r;
+	const char 	*page = "index";
+	int		 rc = 0;
+
+	if (khttp_fcgi_test())
+		return 0;
+	if (khttp_parse(&r, NULL, 0, &page, 1, 0) != KCGI_OK)
+		return 0;
+	if (r.reqmap[KREQU_ORIGIN] == NULL)
+		goto out;
+	if (strcasecmp(r.reqmap[KREQU_ORIGIN]->val, "http://localhost"))
+		goto out;
+
+	khttp_head(&r, kresps[KRESP_STATUS], 
+		"%s", khttps[KHTTP_200]);
+	khttp_head(&r, kresps[KRESP_CONTENT_TYPE], 
+		"%s", kmimetypes[KMIME_TEXT_HTML]);
+	khttp_head(&r, kresps[KRESP_ACCESS_CONTROL_ALLOW_ORIGIN], 
+		"%s", r.reqmap[KREQU_ORIGIN]->val);
+	khttp_body(&r);
+	rc = 1;
+out:
+	khttp_free(&r);
+	return rc;
+}
+
+int
+main(int argc, char *argv[])
+{
+
+	return !regress_cgi(parent, child);
+}